URob Koltz kunye noDave Meyer baxoxa nge-ferritic (magnetic) kunye neempawu ze-austenitic (ezingezomagnetic) zeentsimbi ezingenazintsimbi ezidityanisiweyo.Imifanekiso yeGetty
Umbuzo: Ndiwelda itanki eyenziwe nge-316 stainless steel, engekho-magnetic.Ndiqalise ukuwelda iitanki zamanzi ngocingo lwe-ER316L kwaye ndafumanisa ukuba i-welds imagnetic.Ingaba kukho into ephosakeleyo endiyenzayo?
A: Akunanto yakuzikhathaza ngayo.Kuqhelekile ukuba iiwelds ezenziwe nge-ER316L zitsale umazibuthe, kwaye kuxhaphake kakhulu ukuqengqeleka kwamaphepha angama-316 kunye namaphepha ukuba angatsali umazibuthe.
I-alloys yentsimbi ikhona kwizigaba ezininzi ezahlukeneyo ngokuxhomekeke kwiqondo lobushushu kunye ne-alloying, nto leyo ethetha ukuba ii-athom zentsimbi zicwangciswe ngendlela eyahlukileyo.Izigaba ezimbini eziqhelekileyo ziyi-austenite kunye ne-ferrite.
Kwintsimbi yekhabhoni eqhelekileyo, i-austenite yinqanaba elikhoyo kuphela kumaqondo obushushu aphezulu, kwaye njengoko intsimbi ipholile, i-austenite iguqula ibe yi-ferrite.Ngoko ke, kwiqondo lobushushu begumbi, i-carbon steel imagnetic.
Amabakala amaninzi ensimbi engenasici, kuquka i-304 kunye ne-316, abizwa ngokuba yi-austenitic stainless steels ngenxa yokuba isigaba sazo esiphezulu yi-austenite kwiqondo lokushisa.
Embindini wenkulungwane yama-20, kwafunyaniswa ukuba xa ukuwelda austenitic steels stainless, ubukho ezinye ferrite kwi weld metal kuthintela microcracking (ukuqhekeka) ukuba kunokwenzeka xa metal filler austenitic ngokupheleleyo.Ukuthintela microcracking, intsimbi ezininzi filler for austenitic stainless steels ziyilelwe ukuba siqulathe 3% ukuya 20% imagnethi ezisetyenziswayo ukutsala ferrite . iiweld zensimbi ezingenasici zinokulinganisa inqanaba lomtsalane wamagnetic.
I-316 inezinye izicelo apho ukunciphisa iimpawu zemagnethi ze-weld kubaluleke kakhulu, kodwa oku kunqabile ukuba kufuneke kwiitanki.
I-WELDER, eyayisakuba yi-Practical Welding Today, ibonisa abantu bokwenene abenza iimveliso esizisebenzisayo nesisebenza ngazo yonke imihla.Eli phephancwadi liye lanceda abantu baseMntla Merika iminyaka engaphezu kwama-20.
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